diff --git a/.gitignore b/.gitignore
index 0e855890..35a4c06f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -74,4 +74,19 @@ buildServer.json
 Telegram.LSP.json
 **/.build/**
 spm-files
-.bsp/**
\ No newline at end of file
+.bsp/**
+
+# ===========================================
+# SECURITY: Sensitive files (DO NOT REMOVE!)
+# ===========================================
+
+# API credentials and configuration
+build-system/config.json
+
+# Provisioning profiles (contain Apple Developer account info)
+*.mobileprovision
+build-system/fake-codesigning/profiles/*
+
+# Backup sensitive files
+*.backup
+*_BACKUP*
\ No newline at end of file